HP ENVY Maintenance And Service Manual page 64

When replacing the system board, be sure that the following components are removed from
the defective system board and installed on the replacement system board:
●
WLAN module (see
●
Heat sink (see
●
Memory module (see
Remove the system board:
1. Disconnect the following cables from the system board:
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(1) WLAN antenna cables from the terminals on the WLAN module
NOTE:
The #2/black WLAN antenna cable connects to the WLAN module #2/Aux terminal.
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(2) Subwoofer cable
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(3) Power connector cable
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(4) Hard drive ZIF connector cable
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(5) TouchPad board ZIF connector cable
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(6) Keyboard backlight ZIF connector cable
2. Disconnect the following cables from the system board:
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(1) Keyboard ZIF connector cable
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(2) Fingerprint reader board ZIF connector cable
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(3) RTC battery cable
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(4) Card reader board ZIF connector cable
●
(5) Front speakers cable
54 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
WLAN module on page
Heat sink on page 56)
Memory module on page
The #1/white WLAN antenna cable connects to the WLAN module #1/Main terminal.
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